Dynamo suspension



W. F. RICHARDS.

DYNAMO SUSPENSION.

APPLICATION FILED JULY 30.1915.

Paten ted Nov. 23, 1920.

2 SHEETS-SHEET I.

' W. F. RICHARDS.

DYNAMO SUSPENSION, APPLICATION FILED JULY 30.1915.

1,359,9, Patented Nov. 23, 1920..

2 SHEETS-SHEET 2.

a/M%MM A TTOR/VEYS UNITED STATES PATENT OFFICE.

WILLARD F. RICHARDS, OF BUFFALO, NEW YORK, ASSIGNOR TO GOULD COUPLER-GOMEANY, A CORPORATION OF NEW YORK.

.DYN AMO SUSPENSION.

- 1'0 all whom it may concern dent of Buffalo, county of Erie, State ofNew York, have invented certain new anduseful Improvements in DynamoSuspensions, of which the following is a specification.

My invention relates to improvements in suspensions for dynamos drivenfrom a car axle, such dynamos being commonly used for lighting railwaycars. The inain object illustrate the arrangement. Fig. 1 is 'a dey j ofmy invention is to provide a simple and efficient arrangement for 1supportingi "the dynamo, which will be easily accessible for inspectionand repairs. Further objects,,

features and advantages will more clearly appear from the detaileddescription given below, taken in connection with the accompanyingdrawings which form a part of this specification. f

In the drawings Figure 1 is a side view of part of a car with myinvention in one form applied thereto, certain parts being broken awayand shown in sectionto more clearly .tail illustrating the method ofsecuring the carrying frame to. the supporting frame. Fig. 2 is asection taken on the line 22 of Fig. 1. Fig. '3 is a similar viewlooking at the dynamo in the opposite direction. ig. 4

' is a detail'view of the dynamo suspension --tions.

- underneath side of the car body by being con-.

shown in-Fig'. 1, illustrating the parts in a different position. Figs.5, 6 and 7 are views similar to Fig. 4, but illustrating modifica-Referring to F igs.- 1 to 4, 1 represents a car body havinga center beam2. One of the car axles is shown at'3, provided with a pulley 4,overwhich passes a belt 5 driving the dynamo 6. A frame for supporting thedynamo comprises a member 8, secured to the nected to cross beams bybolts 9 and stirrup member 10, secured to the member 8 by means of bolts11, and also a cross member 12, one end of which is bolted to thestirrup 10, by bolts 13, and the other end of which is bolted to thecenter beam 2 by means of bolts 14. Adjustably secured ,on the memv ber12 is a carrying frame 15, having depending lugs; carrying apivot rod'16, from which the dynamo 6is pivotally suspended by means oflugs 17rigid with the dynamo. The carrying frame 15 -is secured to theSpecification of Letters Patent.

dynamo by a link 21.

Patented Nov. 23, 1920.

' Application filed July 30, 1915. Serial No. 42,696.

cross member 12 by means of bolts 18 passing through slots in the member12 and member 12 'and may be secured in any of its adjusted positionsby. tightening the bolts 18. The frame 15 firmly held in adjustedposition by means of set screws 19. Carried by the frame 15 is a bellcrank lever 20, the lower end of which is connected with the Connectedto the short arm ,of the bell crank lever 20 is a rod 22, passingthrough an-opening in the depending arm 23, integral with the frame 15.A coilspring 24 surrounds the rod 22 and is compressed by means. of ahand nut 25, screw threaded on the rod 22 against an abutment disk 26loose on the rod 22 and bearing agaiiist-the arm 23. It will be clearfrom Fig. ll'thjat-the compressed spring 24 actsas a tehsionfdevice,tending to swing the bell crankleve'r20 to the right, thereby tending tomove the dynamo away from the car axle and maintain te'nsionon the belt5. The tension which the spring exerts may be adjusted by turning thehand nut 25. If it is desired to relieve the tension on the belt or makethe belt slack, in order to remove it or in order that the dynamo may bemotored for testing, the dynamo 6- is moved toward the axle in adirection to compress the spring 24, and when the pivot 27 by which therod, 22 is connected to the short arm of the bell crank 20, passes thedead center, the spring will then tend to force the dynamo toward thecar axle. At the same time the long arm of the bell crank 20 and link 21will pass the dead center, as shown in Fig. 4, so that the dynamo willbe locked in the position shown in Fig. 4,

-independently of the spring 24. That is,

against the frame 15. The bell crank lever 20 and link 21 thus form atoggle lever arrangement for moving the dynamo about its pivot towardand from the axle, the tension device normally tending to cause thetoggle bell crank lever 30 is pivoted to the carrying frame 15, but thearms of the bell crank are arranged in a somewhat different positionrelatively to one another. Thus the rod 31 pi ed to the end of the shortarm of the bell crank normally extends above the pivotal center 32 ofthe bell crank and passes through an opening in a depending arm 33 ofthe frame 15 and has a spring 34su1- rounding its outer end andcompressed against the arm 33 by means of a hand nut 35, the bell crankbeing connected to the dynamo 6 by means of a link 36. The spring 34being compressed by the nut 35, tends to swing the bell crank so as topull the dynamo away from the car driv ng axle and thus maintain theproper tension on the belt.

In the modification shown in Fig. 6, the toggle, comprising links 40 and41, is used for moving the dynamo toward and from the car axle. One endof the link 40 is pivoted to the frame 15 and one end of the link 41 tothe dynamo, the other ends of the two links being pivoted to one anotherbymeans of pivot pin 42,'to which is also pivoted a rod 43 passingloosely through, a member 44, journaled in'a depending arm 47 at 48.The'coil spring 45 surrounds the outer end of the arm 43 and is pressedagainst the member 44 by means of a hand nut 46 screw threaded on theouter end of the rod 43. The spring 45 therefore acts as a tensiondevice tending to pull the pivot 42 toward the arm 47 and thus force thelink 41 downwardly by reason ofthe toggle action of the links 40 and 41,and so tend to force the dynamo 6 away from the car axle to maintainproper tension on the belt.

In the arrangement shown in Fig. 7, toggle links 50 and 51, pivotallyconnected together and also pivotally connected to the frame 15 anddynamo 6 respectively, are acted upon by a rod 52, one end of which ispivoted to the common pivot of the links 50 and 51, and the other end ofwhich passes through a depending arm 53 on the frame 15. A coil spring54 has one end bearing upon a member 55 which bears upon the member 53..The springis compressed by means of a hand nut 56, screw threaded onthe inner end of the rod 52. The spring 54 therefore acts on the togglelinks 50 and 51 to tend to force the link 51 downwardly and In thearrangement shown in Fig. 5, the

the dynamo away from the car'axle to maintain the tension on the belt 5.By meansof particular embodiments of the invention, I

do not desire to be limited to such details except as clearly pointedout in the appended claims, since many changes and modifications maywell be made without departing from the spirit and scope of my inventionin its broader aspects.

What I claim as new and desire to secure by Letters Patent is:

1. A dynamo suspension for cars, having in combination with the car andits axle a supporting member secured to a car body, a

dynamo pivotally suspended therefrom, a belt driving the dynamo from thecar axle,

a toggle arrangement for moving the dynamo. about its pivot toward andfrom the ear axle and a tension device acting on said toggle arrangementand tending to swing the generator away from the driving axle,.

said toggle arrangement being adapted to operate past its dead center-inopposition to said tension device.

2. A dynamo suspension for cars having in combination with the car andits axle, a

dynamo pivotally suspended, a belt driving the dynamo from the car axle;a toggle arrangement for moving the dynamo about its pivot toward andfrom the car axle and a tension device acting on said toggle arrangementand tending to-swing the generator away from the driving axle,

said toggle arrangement being adapted to:

operate past its dead center.

3. A dynamo suspension for cars, having in combination with the car andits axlea dynamo pivotally mounted, a belt driving said dynamo from acar axle, and a tension device normally tending to swing the dynamo awayfrom the car axle but acting to force the dynamo toward the car axleupon the dynamo being moved a certain distance toward the car axle andpositively lock the dynamo in such position toward the axle and with thebelt slack.

4. A dynamo suspension for cars having in combination with a car anditsaxle, a dynamo having lugs rigid therewith, a belt driving the dynamofrom the car axle, a frame rigid with the car body, said lugs beingpivotally connected directly to said frame whereby the dynamo ispivotally suspended from the car body, a pivoted toggle lever forswinging said dynamo about said pivotand a spring acting on said togglelever and tending to swing the dynamo away from the axle and means foradjusting the tension of said spring.

5. A, dynamo suspension for cars having in combination with the car andits axle, a dynamo pivotally suspended, a belt driving the dynamo fromthe car axle, a toggle lever arrangement for swinging the dynamo towardand from the car axle,'and a tension device acting on the toggle leverarrangement to normally swing the dynamo away from the car axle, butacting to force the dynamo toward the. car axle upon the dynamo beingmoved a certain distance toward the car axle, and positively lock thedynamo in such position with the'belt slack and with the toggle leverarrangement holding the dynamo in such position independently of thetension device. i

6; A dynamo suspension for carshaving in combination with the car andits axle, a dynamo pivotally mounted, a belt driving the dynamo from thecar axle, a lever arrangement for swinging the dynamo toward and fromthe car axle, and a sprlng acting on the lever arrangement to normallyswing the dynamo away from the car axle, but

acting to force the dynamo toward the car axle-upon the dynamo beingmoved a cer-' tain distance toward the car axle, and positively lock thedynamo in such position with I the belt slack and with the leverarrangement holding the dynamo in such independently of the spring.

7. A dynamo suspension for cars having in combination with the car andits axle, a dynamo pivotally suspended from the car body, a belt drivingthe dynamo from the car axle, a toggle lever arrangement for swingingthe dynamo toward and from the car axle, anda tension device acting onthe toggle lever arrangement to normally swing the dynamo away from thecar axle, but acting to force the dynamo'toward the car axle upon thedynamo being moved a certain distance toward the car axle, andpositively lock the dynamo in such position with the belt slack and withthe toggle lever arrangement holdingthe dynamo insuch positionindependently of the tension device, and a nut for adjusting the tensionofthe tension device.

8. A dynamo suspension for cars. having in combination with the car andits axle, a dynamo pivotally mounted from the car position body, a beltdriving the dynamo from the car axle, a .lever arrangement for swingingthe dynamo toward and from the car axle, and a spring acting on thelever,arrangement to normally swing the dynamo away from the car axle,but acting to force the dynamotoward the car axle upon the dynamo beingmoved-a certain distance toward the car axle, and positively lock thedynamo in such position with the belt slack and with the leverarrangement holding the dynamo in such position independently. of thespring and means foradjusting the tension of the spring,

body, a carrying'frame secured to the supframe around a single axis, anda compressed frame.

9. A dynamo suspension for cars having, in combination with the earl and1ts axle, 3:5.

. supporting frame secured toj' the underneath side of the car body, acar ing frame adacting to force the dynamo toward the car axle upon thedynamobeing moved a certain distance toward the car axle, and-positively lock the dynamo in such position with the belt slack andwith the toggle lever arrangement holding the dynamo in such-positionindependently ofthe tension device. 35

10.3A suspension for dynamos driven from .car axles having incombination with the car and its axle, a supporting frame secured to theunderneath :side of the car porting frame and adjustable with respectthereto toward and from the driving car axle, a dynamo having lugs rigidtherewith, normally loosely pivoted to said carrying spring tendingnormally to swing the dynamo away from the car axle. 1'1. suspension fordynamos driven from car axles having in combination with the car and itsaxle,,a supporting frame secured to the underneath side of the car body,a carrying frame secured to-the supporting frame and adjustable .withrespect thereto toward and from the driving -car axle, a dynamo havinglugs rigid therewith, norma-lly loosely pivoted to said carrying framearound .a single axis, a belt driving the dynamo from the driving caraxle, a spring tending normally to swing the dynamo away from the caraxle, and means for adjusting the tension of said spring. I

12. A suspension for dynamos driven from car axles, having incombination with the car and its axle, a center beamon the bottom of thecar body, a detachable sup-v porting frame having one end secured .tosaid beam and the other end secured to the car body, acarrying frameadjustably se- .cured to said supporting frame and a dynasaid carryingmo supportedto swing from 13. A dynamo suspension having in combinationwith acar and its axle, a frame rigidly secured to the car body, adynamo having lugs rigid therewithand pivoted to said frame whereby thedynamo is pivotally I suspended from the car body, a belt driving thedynamo from the car axle, a tension de vice comprising a sprin tendingto swing the dynamo away from t e driving'axle, and 130.

means for adjusting the tension of said spring independently of theadjustment of said pivotal support, said tension device normally tendingto swing the dynamo away "from the car axle, but acting to force thedynamo toward the car axle upon the dynamo being moved a certaindistance toward the car axle.

14. A dynamosuspension having in comb nation with a car and its axle, aframe rigidly secured to the carbody, a dynamo- Y devicev comprising aspring under compres- 1,a59,92o 7 i sion, tending to swing the dynamoaway from the driving axle, and means for adjusting the tension of saidspring independently of said pivotal support, said tension devicenormally tending to swing the dynamo away from the car axle, but actingto force the dynamo toward the car axle upon the dynamo being moved acertain distance toward the car axle, and positively lock the dynamo insuch position toward the driving axle with the belt slack and indeendent of the spring.

I n testimony whereof I have signed my name to this specification.

WILLARD F. RICHARDS.

